package com.baiyun.lease.web.admin.service.impl;

import com.baiyun.lease.common.minio.MinioProperties;
import com.baiyun.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {

    @Autowired
    private MinioProperties minioProperties;
    @Autowired
    private MinioClient minioClient;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
            boolean bucketExists = minioClient.bucketExists
                    (BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());
            if (!bucketExists) {
                minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
                minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName())
                        .config(createBucketPolicyConfig(minioProperties.getBucketName())).build());
            }
                String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
                minioClient.putObject(PutObjectArgs.builder().
                        bucket(minioProperties.getBucketName()).
                        object(filename).
                        stream(file.getInputStream(), file.getSize(), -1).
                        contentType(file.getContentType()).build());
                return String.join("/", minioProperties.getEndpoint(), minioProperties.getBucketName(), filename);

    }
        private String createBucketPolicyConfig (String bucketName){
            return """
                    {
                      "Statement" : [ {
                        "Action" : "s3:GetObject",
                        "Effect" : "Allow",
                        "Principal" : "*",
                        "Resource" : "arn:aws:s3:::%s/*"
                      } ],
                      "Version" : "2012-10-17"
                    }
                    """.formatted(bucketName);
        }

}